This could work if simultaneously you eliminate the ability to "reload" if a strat is down (troops or ord).
Favorite tactic of those that have the opportunity is to land the goon whose troops just took a field and re-arm him at the pad. This will work even if the just-taken field has had its troops porked.
Similarly, if you have rocket rails and you are trying to re-arm at the pad, currently the rockets will re-load even if the ord is down.
If you want your selection box, IMO then these should be automatically linked to the strats. No more freebies!