Replacing end to end vlans with routing?

So my network was designed via intervlan routing. We have a cat6500 core, which goes to IE4010s. The vlans span multiple switches. This is a bad design no?

Example of how we have it set:

Vlan20 Int vlan 20 10.1.20.250 (core IP)

Vlan30 Int vlan 30 10.1.30.250 (core IP)

Vlan40 Int vlan 40 10.1.40.250(core)

Vlan50 - Management Int vlan 50 10.50.50.250 (core)

There are a couple of more VLANs defined, but you get the hint. How should I improve this so these VLANs aren't traversing all these other switches. We have about 90 total.

Should I go OSPF and replace the vlan subnets into areas?

Looking to improve my design.

Thanks