My detailed comments are grouped around the various parts of the plan as follows:
Spa Road South side retail units - Ideally the plan should provide for the replacement of all these buildings as none are attractive and all in need of some modernisation. However, we should seek a design which gives the impression of age and character rather than a straight row of rather boring shop fronts. The buildings could reasonably be 2 storey or at least single storey with attic space. This would provide either small start up business space/studios or residential studio flats. Consideration would need to be given to oversight of the bungalows to the rear, but the proposed developments would not necessarily need south facing windows.
Spa Road North side retail units - I have no objection to the replacement of the building at 2 Main Road, but note that the space at the front could be used to resolve problems at the Spa junction. I can see the benefit of the new retail units shown as R and LR on the plan, especially if the LR unit replaced the existing Co-op/Somerfield unit. This could ease access for delivery lorries to the store. I also like the larger car park with road access via Eldon Way and a footpath through to Spa Road although the extra traffic in Eldon way may need more than a 'table top ' crossing for pedestrians. I would include the redevelopment of the existing Co-op/Somerfield and associated shops as shown in option 2a, but would prefer to retain the sorting office as I believe this is valuable to the village. My regret is losing the warehouse currently in Eldon Way which appears to be a thriving business. I would hope a way could be found to rehouse them on the estate.
Eldon Way - I agree with the consolidation of leisure facilities into one area with easy access to both the village centre and car park. It may however, be necessary to put railings or other safety measures in place to protect children using the centre. The provision of new office space is dependent on there being a demand - there is already a lot of such space in the village. Perhaps something more flexible could be considered.
Library and Health Centre - Given the recent refurbishment at the doctor's surgery I am not sure the development as envisaged is sensible. However, if it were possible to extend the facilities to include those currently provided in Spa Road , this would release that land for housing as proposed in option 3. Presumably these facilities would need to incorporate the current Day Centre located in the car park, but again I cannot see any sense in knocking down a perfectly good building. If there is a new footpath via the Church (though I would not see this as a priority) then there should be an exit from the car park aligned with it and the existing Zebra crossing relocated to link the two.
Station - It is a good idea to provide new parking to the south of the station, but any changes to the roundabout and drop off points must be dependent on the parking space being provided so that short stay pick up is possible and there is space for the taxis. Alternatively the Taxi rank could stay where it is and a more modest redevelopment of the front of the station undertaken. The proposal in option 3 for flats to the north east of the station on existing waste ground seems sensible. However, putting flats on the other side on the existing car park would create a 'barrier' for people using the rest of the car park. similarly the idea for a drop of point on that side of the station seems pointless. Possibly a better solution would be to create another entrance into the car park from Plumberow Avenue near the existing footpath which would allow people to drive in and then exit only from the other entrance. The space directly in front of the north side of the station would be used as car parking for the proposed flats. Any additional flats could be located at the far end of the car park (assuming additional space is provided to the souith of the station) and could link to the proposed houses off Plumberow Avenue shown in option 3a. I cannot see any great benefits to a new link between the station and Eldon Way but would not object if it could be achieved without great cost.
Other aspects - I cannot see any benefit in opening the western entrance to the Potters car park. The number of cars affected would be minimal and would disrupt traffic flow by Waters and Stanton as traffic turned in and out. I would be disappointed to lose the retail units further along Main Raod, but recognise they have been difficult to fill recently so perhaps residential use would be better. I am not sure why the current estate agents/proposed house shown as 5 on the plan is significant to the plan. If it is then the adjoining retail building should be included.