The alignment should not have to constantly be aligned unless something changes like the adjusting nut turning. If the lock tabs are properly used it wont happen.
Solid mounts are used a lot in HP applications. The rear still uses the bellhousing mounted to the transom plate and then a plate type mount is used for the front. The down side is that if the gimbal housing is ever removed for servicing, it has to go back in the exact location or the solid mounts will have to be modified to get the alignment correct.