Is this still the best approach for handling this process with the Odoo 18 Updates? 

We’re looking for an efficient way to manage long-term rental assets that function as fixed assets while integrating with inventory, rentals, and subscriptions  and see that Odoo has many options for these, but are unsure how to tie them together for an efficient workflow.

Key challenges:

• Inventory as Fixed Assets – Needs proper depreciation tracking while staying visible for rental allocation.
• Flexible Pricing & Order Writing – Most rentals are open-ended leases (subscriptions), but some are fixed-term rentals (daily/hourly). Pricing should be automated, like the subscription module, while allowing manual overrides.
• Warehouse Picking & Serial Assignment – Serials should be assigned at delivery via barcode scanning, not at the order stage.
• Condition-Based Tiers – Inventory needs to be tracked by wear level (e.g., Tier 1 = like new, Tier 3 = more worn) with the ability to move serials between tiers as they degrade.
• Selling Used Rental Inventory – Some assets are eventually sold; need a way to track condition, adjust pricing, and transition serials from rental to resale.

The above mentioned process seems like it could help with part of this (although a bit complicated for everyday use), but still unclear how asset setup, management, and accounting would work within this. 

Thank you! Also works in V17.